Heel-trimmer



(No Model.) 2 Sheets-Sheet 1.

A. P. SMITH.

HEEL TRIMMEB.

No. 341,064. E Patented May 4, 1886.

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f2/6MM.

(No Model.) 2 Sheets-#Sheet 2.

. A. F. SMITH.

EBEL T BIMMER. vNo.` 341,064. Patented May 4, 1886.

:lm llllllllm" M @ww UNITED STATES PATENT OFFICE.

AARON F. SMITH, OF LYNN, MASSACHUSETTS.

HEEL-TRIMMER.

SPECEFICATION forming part of Letters Patent No. 341,064, dated May 4, 1886.

Application tiled July 27, 1885. Serial No. 172,755.

To @ZZ whom it 71mg concern:

Be it known that l, AARON F. SMITH, of Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Heel -Trimmers, of which the following is aspecification.

This invention relates to heel`trimming machines employing a rotary cutter-head,to which the heel is presented while held by the hands of the operator, a rand-guide or thin-edged plate,which is inserted in the groove between the rand or heel-seat and the counter of the boat or shoe, and atop-lift guard, against which the top lift bears during the trimming operation, said guard preventing the cutter from cutting into the top lift.

lThe invention consists in the combination of a rotary molded cutter, a top-lift guard, and a randguidc projecting over a portion of the molded surface of the cutter, and having a yielding movement toward and from the toplift guard andina direction substantially pai'- allel with the molded surface of the cutter over which it projects, the toplift guard having no yielding movement, so that the heel is supported and guided by the top-lift guard, the rand-guide being pressed normally by a spri ng toward the top-lift guard, and conforming automatically to the difference between the width of the surface of the heel and the sides and at the rear, the latter portion being the wider.

The invention also consists in certain improvements in the construction of the top-lift guard, all of which I will now proceed to describe.

Ot' the accompanying drawings, forming a part 'of this specification, Figure l represents a top view of the cutter-head and the accompanying devices embodying my invention, the rand-guide'being shown in the position it occupies when a side portion of the heel is being trimmed. Fig. 2 represents a similar view showing the rand-guide in the position it occupies when the rear portion of the heel is being trimmed. Fig. 3 represents a perspective view of the top lift guard and its support.

The same letters of reference indicate the same parts in all the gures.

In the drawings, a represents a molded cutter mounted on a power-rotated arbor, b, and formed to impart the desired shape of the heel. The only peculiarity in the construction of the edge of the shank j'.

(No model.)

the cutter is, that it has no randfknives. In other respect-s the cutter may be constructed Substantiall y as shown in Letters Patent granted to J. C. XVetmore, April 28, 1885, orin any other suitable manner.

c represents the top-lift guard, which has a ange or rest, 2, for the edge of the top lift, curved to conform to the peripheral curvature of the cutter, and located as close there to as possible, and a dang-c or rest, 3, for the tread-surface of the top lift, said lange being at an angle to the edge-rest 2. The top-lift guard is supported rigidly in any suitable manner, preferably by the rest d, which is attached to the frame of the machine, and projects forward below the cutter as a support for the surface of the heel below the point where it is acted on by the cutter, the edge-rest 2 being formed on a plate, 4, which has a grooved shank, 5, embracing a rib, 7, on the rest d. Said rib permits the top-lift guide to be adjusted toward and from the cutter, a set-screw, 8, holding the shank 5 at any point to whichit may be adjusted. The treadrest 3 is adjustably secured to the plate 4 by means of three screws, 9 l0 l0, in a. flange in said plate. The central screw, 9, is engaged with the rest 3 by a ballandsocket joint or other suitable pivot, so that the rest can tip lengthwise on said screw, while the end screws, l0 l0, have reduced ends inserted in sockets in the rear side of the rest 3, but have no positive connectiontherewith. The treadrest can therefore be adj usted toward or from the edge of the edgerest, and can be set at any desired longitudinal inclination or angle therewith.

e represents the rand-guide, which consists of a dished plate formed to project over one end of the cutter, as shown, and havingathin edge adapted to enter the crease between the rand or heel-seat and the counter of a boot or shoe. rlhe rand-guide is attached to a shank, f, which is adapted to move endwise in a slot or guide in a fixed supporting arm or bracket, w; Said arm is provided with two screws or studs, g g, the one passing through a curved slot, h, in the shank, and the other bearing against a correspondinglycurved portion, z', of The curve in the edge of the shank is made for a portion of its length parallel with the curve of the slot, so that the rand-guide may be moved for a limited distance parallel with the surface kof the cutter without altering the angular relation of said rand-guide and its shank to the shaft of the rotary cutter. This movement of the rand-guide with its shank permits the holding of the heel at the same angle with relation to the cutter when forming different curves in the heel. It will be observed, however, that when, in the outward movement of the randguide and its shank, the end of the slot has been reached,the guide will be thrown outward, in which position it is held bythe spring bearing against the upper end of the shank. A spring, j, bearing against the rear end of the shank f, normally pushes the shank and randguide forward, and holds the latter with a yielding pressure against the work during the trimming operation, and projects the guide forward from the cutter when the work is removed, so that the guide may be inserted in the randerease of the next boot or shoe without bringing the heel too near the cutter while inserting the guide in the rand-crease.

Operation: The operator, holding the boot or shoe in his hands, places the rand-crease on the projected rand-guide and presses the heel toward the cutter, taking care to bring the top lift to bear on lthe top-lift guard. The rand-guide yields, so that when the heel is in position to be acted on by the cutter the rand guide is close to the cutter, as shown in Fig. l. The operator now turns the heel so as to present all parts of the surface to be trimmed to the cutter. Vhen the wider rear portion of the heel is brought into the position to bc trimmed, the rand-guide yields still further, as shown in Fig. 2. It will be seen that the heel is guided entirely by the top-lift guard, so that the more abrupt curvature of the cutter adjacent to the toplift guard is imparted to the entire surface of the heel at a uniform distance from the top lift instead of at a varying distance, as it would be if the heel were guided by the randguide, as shown in the Vetmore patent above referred to. At the same time the yielding rand-guide enables all parts of the heel (the wider and narrower) to be trimmed at a single presentation.

I am aware that the heel has been guided in part by a top-lift guard and in part by a randguide when presented to a rotary cutter to which both the rand-guide and the top-lift guard were affixed, neither' having a yielding movement; but in this case two passes or presentations of the heel were required to complete the trimming-one when the heel was guided by the rand-guide, and the other when guided by the top-lift guard.

I am also aware that a rand-guide has been so constructed as that when it was attached to the machine the rand-supporting edge could be moved in a path parallel with the surface of the rotary cutter; but in that device every movement of the rand-guide with its shank altered their relation augularly to the shaft or axis of rotation of the cutter, and consequently the relative position of the shoe held against said guide.

In the trimmer shown in the Vetmore patent the trimming is accomplished by a single pass or presentation of the heel to the cutters; but the more abrupt curvature of the cutter is not kept uniformly near the top lift, as it is in the present case. I am therefore enabled by my improvement to give the heel a more desirable form by a single pass than heretofore.

I do not limit myself to the use of a toplift guard formed as above described, but may, if desired, use a guard capable of rotating with the cutter without yielding, or one supported in any other suitable manner.

I claim- 1. The combination, with the rotary cutter and a non-yielding top -lift guard, of the rand-guide having its shank made with the curved slot and the corresponding curved portion at its edge, the said slot and curved portion engaged by studs in the supportingbracket, substantially as shown, and permitting the rand-guide to be moved in a path parallel with the molded surface of the cutter without altering the angular relation of said guide or its shank with the shaft of the cutter, as set forth.

2. The combination, with the rotary cutter and a non-yielding top-lift guard, of the raudguide having its shank made with the curved slot and the corresponding curved portion at its edge, the said slot and curved portion engaged by studs in the supporting-blacket, substantially as shown, and permit-ting the randguide to be moved in a path parallel with the molded surface of the cutter without altering the angular relation of said guide or its shank with the shaft ofthe cutter,and a spring bearing against the end of said shank, whereby said guide is held with a yielding pressure against the work, as set forth.

3. rllhe combination, with the rotary molded cutter and the yielding rand-guide, of the toplift guide and means, substantially as described, 'for adjusting said guide with relation to the cutter, as set forth.

4. The combination, with the rotary cutter and the yielding rand-guide, of the iixed toplift guide, having the'edge-rest 2 and the adjustable tread-rest 3, and means for securing the tread-rest in any position to which it may be adjusted, as set forth.

5. The combination, with the rotary cutter and the yielding rand-guide, of the fixed toplift guide, having the edge-rest 2 and the adjustable tread-rest 3, means for securing the tread-rest in any position to which it may be adjusted, and means for adjusting said guide with relation to the cutter, all as set forth.

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In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 18th day of .I ul y, 1885. IVitnesses: AARON F. SMITH.

WARREN BUsHBY, C. F. BROWN. 

